In version 0.20, 3 ways to progress the story:
1) Clean well, then the heroine is joined by another maid and there the plot begins to go into Lesbian theme
2) With the guards, if you do what they ask, the heroine will be able to escape from the castle.
3) If you don't clean and fail the task, the Lord starts to punish the heroine in different ways.
Extended version: Charles arrives and there is also an extra scene!
Once you clean or don't clean the castle, you walk up to the bed and choose to sleep.